Functions Of The Tubules

Question 1

which epithelium is pct lined by

Answer 1

brush border cuboidal epithelium

Question 2

how much percent of reabsorption takes places in pct

Answer 2

70-80

Question 3

pct helps to maintain the pH and ionic balance of body fluids by absorption of ___________ and selective secretion of _________ and __________

Answer 3

HCO3-
H+
NH3

Question 4

reabsorption is _______________ (minimum/maximum) in ascending limb

Answer 4

minimum

Question 5

what significant role does ascending loop of henle play

Answer 5

maintenance of high osmolarity of medullary interstitial fluid

Question 6

descending limb of loop of henle is permeable to ________ but almost impermeable to __________

Answer 6

water
electrolytes

Question 7

ascending limb of loop of henle is permeable to __________ and impermeable to _________

Answer 7

electrolytes
water

Question 8

in loop of henle, filtrate gets ___________ as it moves down and gets __________ as it moves up

Answer 8

concentrated
diluted

Question 9

in dct, conditional reabsorption of ________ and _______ takes place

Answer 9

Na+
water

Question 10

dct is capable of reabsorption of ___________ and selective secretion of ________ and ___________ and ___________ to maintain the pH and sodium-potassium balance in blood

Answer 10

HCO3-
H+
K+
NH3

Question 11

collecting duct allows passage of small amounts of _______ into medullary interstitium to keep up osmolarity

Answer 11

urea

Question 12

collecting duct plays a role in maintenance of pH and ionic balance of blood by selective secretion of which ions

Answer 12

H+
K+